The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 09, 2006
Filed:
Dec. 17, 2003
Sebastian M. Mundry, Lüdinghausen, DE;
Jens Titschert, Lünen, DE;
Reiner Frank, Gevelsberg, DE;
Jürgen Tschöpe, Selm, DE;
Sebastian M. Mundry, Lüdinghausen, DE;
Jens Titschert, Lünen, DE;
Reiner Frank, Gevelsberg, DE;
Jürgen Tschöpe, Selm, DE;
DBT Automation GmbH, Lunen, DE;
Abstract
The pressure cell device according to the invention serves for measuring hydraulic pressures in hydraulic mining devices in an inherently secure service region. It is provided with a connection element which can be connected to a pressure reception connection and with a sensor housing, on the inside of which is arranged a hydroelectric pressure transducer which is pressurised by the hydraulic pressure present at the pressure reception connection and converts this into an electrical signal. So as to ensure high measurement accuracy over a long operating period, without it being necessary to have exchanges of the pressure transducer or its new calibration, it is provided according to the invention that the pressure transducer comprises a ceramic pressure measuring cell.